This study investigated the relationship between emotional violence and social support with breastfeeding self-efficacy among breastfeeding mothers. This descriptive and correlational study was conducted between June 2024 - February 2025. The sample consisted of 271 breastfeeding mothers within the first six months postpartum period. Data were collected a “Introductory Information Form”, “Breastfeeding Self Efficacy Scale-Short Form (BSES-SF)”, “Exposure to Emotional Violence Scale (EVS)”, and “Multidimensional Scale of Perceived Social Support (MSPSS)”. In our study, the mean BSES-SF score was found to be 57.23 ± 11.23. There was a statistically significant positive correlation between BSES-SF and total score of the MSPSS (r:0.446, p < 0.001). There was a statistically significant negatively correlation between BSES-SF and total score of the EVS (r:-0.449, p < 0.001). According to multiple linear regression analysis, the current feeding mode of the baby (β:0.300, p < 0.001), breastfeeding concerns (β:-0.171, p < 0.05), MSPSS (β:0.214, p < 0.001), and EVS (β:-0.264, p < 0.001) had a statistically significant associated with breastfeeding self-efficacy. It is recommended that healthcare professionals routinely assess mothers exposure to emotional violence level and social support level during the postpartum period. Thus, it is thought that professional support provided when necessary can make a positive contribution to mothers’ breastfeeding self-efficacy.